Shelf device for attachment to vertical surfaces



FIG. 1 is a top perspective view of a shelf device for attachment to vertical surfaces showing my new design;

FIG. 2 is a left side elevational view of the shelf device for attachment to vertical surfaces with the right side being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top perspective view of a second embodiment of the shelf device for attachment to vertical surfaces.

The broken line showing of environment in FIGS. 1 and 5 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a shelf device for attachment to vertical surfaces, as shown and described. 